To　implement　some　complex　geoprocessing　functions,　it　may　need　to　integrate　several　different　GIS　service.　Due　to　the　low　level　HTTP　Get/Post　method　only　support　synchronous　data　queries　and　could　not　keep　service　context　information,　the　current　OpenGIS　Web　Service　(OWS)　architecture　can　not　meet　the　requirement　of　chained　geoprocessing.　Though　the　OpenGIS　Message　Framework　(OMF,　discussing　paper　of　OGC)　provides　a　mechanism　to　favor　service　chaining　in　OWS,　it　does　not　clearly　illustrate　how　to　implement　it.　With　the　coming　of　Web　Service　Resource　Framework　(WSRF),　it　provides　a　feasible　way　to　enables　the　service　chain.　This　paper　first　analyzes　the　WSRF　and　compares　it　with　the　OWS　architecture.　Then　it　provides　a　method　on　converting　the　OWS　under　WSRF.　The　detailed　progress　of　implementing　an　improved　map　service　using　Globus　Toolkit　is　provided　at　the　end.　The　result　shows　it　get　better　performance　and　collaborative　than　standard　OWS.　©　2008　IEEE.